>>6836020There's a big difference between getting genuinely concerned about your oshi, especially if it's an unusual or dangerous situation
(like Nene hyperventilating on stream), and being annoying by posting dumb shit in chat like "You should go to bed, you've been streaming for too long!", "Noooo doing X isn't good for you!", etc... as if you're their mom or something.
When anons are talking about concernfags, they usually mean the latter ones.